The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2011
Filed:
Jan. 25, 2007
Noritaka Deguchi, Kawasaki, JP;
Noritaka Deguchi, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A frequency band FC assigned to a first wireless communication system and the frequency bands F, . . . , Fm assigned to a second wireless communication system are set up for a base station apparatus. The base station apparatusperiodically performs a frequency detection process A to detect whether or not the frequency bands F, . . . , Fm are usable for the communication with a mobile station. When the base station apparatusand the mobile stationare communicating, the base station apparatus determines whether or not the frequency band used for the communication should be changed from FC to F, . . . , Fm in accordance with its communication status. If it is determined that the frequency band should be changed, the frequency band used for the communication is changed to the frequency band determined as usable through the frequency detection process A.